CPC National Collection Plant Profile
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Hedeoma todsenii
Family: |
Lamiaceae |
Common Name: |
Todsen's pennyroyal |
Author: |
Irving |
Growth Habit: |
Subshrub, Forb/herb |
CPC
Number: |
2159 |
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Primary
custodian for this plant in the CPC National Collection of Endangered
Plants is: |
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Joyce Maschinski, Ph.D. contributed to this Plant Profile. |
Hedeoma todsenii
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Todsen's pennyroyal is a rare mint that is found in south-central New Mexico. It is a perennial rhizomatous herb approximately 4 to 8 inches (10 to 20 cm) tall. The small, lance-shaped leaves are arranged oppositely along the stem. The tubular orange (or less frequently yellow) flowers open to two lips. Typical of plants in the mint family, the leaves of this species emit a distinctive fragrant odor.
Even though thousand of stems may occur at a site, the number of genetically distinct individuals is likely to be far less because of the tendency of the species to form clonal mats. Plants either do not form seed or form very little seed in the wild.
Distribution
& Occurrence |
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State Range
Habitat
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loose gypeous-limestone soils in pinyon- juniper woodlands at 6250 -6800 feet (1900 -2075 meters) elevation |
Distribution
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Known from the San Andres and Sacramento mountain ranges in southern New Mexico in a total of 18 sites. |
Number Left
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18 populations on federal lands in the San Andres and Sacramento Mountains of New Mexico |
State/Area
Protection
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State/Area |
Rank |
Status |
Date |
|
| |
New Mexico |
S1 |
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12/21/1989 |
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Conservation,
Ecology & Research |
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Ecological
Relationships
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Plants grow in shady areas of pinyon-juniper woodlands associated with mountain mahogany, wavyleaf oak, snakeweed and muhly grass. |
Threats
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Natural threats currently appear to be greater than threats from human activities, because populations are relatively inaccessible. Grazing by livestock and wild ungulates impacts plants, but drought is probably a more serious threat. Low genetic diversity also could be a threat.
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Current Research Summary
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In an attempt to determine if genetic or pollination factors were limiting seed set in the wild, Huenneke (1993) did pollination and genetic studies of Todsen's pennyroyal, however the genetic results do not clearly explain patterns of poor seed set seen in the wild. |
Current Management Summary
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Todsen's pennyroyal habitat on BLM-lands has been recommended for designation as an Area of Critical Environmental Concern. On USFS lands, the plant's habitat is not authorized for logging or fuelwood harvest and the grazing allotment has been withdrawn. |
Research Management Needs
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More research is needed on factors responsible for low sexual reproduction. |
Ex Situ Needs
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The species has been successfully propagated vegetatively through traditional and tissue-culture techniques, however because no or few seed is produced in the wild, plants can only be kept ex situ through vegetative propagation. |
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Books (Sections)
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Kartesz, J.T. 1999. A synonymized checklist of the vascular flora of the U.S., Canada, and Greenland. In: Kartesz, J.T.; Meacham, C.A., editors. Synthesis of the North American Flora, Version 1.0. North Carolina Botanical Garden. Chapel Hill, NC.
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Books (Edited Volumes)
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New Mexico Native plants Protection Advisory Committee. 1984 A handbook of rare and endemic plants of New Mexico. Albuquerque, NM: University of New Mexico Press.
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Conference Proceedings
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Sivinski, R.; Knight, P. Narrow Endemism in the New Mexico Flora. Gen. Tech. Rep. RM-GTR-283. Proceedings of the Southwestern Rare and Endangered Plant Conference; September 11-14; Flagstaff, AZ. In: Maschinski, J.; Hammond, H.D.; Holter, L., editors. 1996. USDA and US Forest Service. p 286-296.
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Electronic Sources
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(1999). New Mexico Rare Plants Information. New Mexico Rare Plant Technical Council: Albuquerque, NM. Version 15. http://nmrareplants.unm.edu/nmrptc/rarelist.htm. Accessed: 2002.
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Journal Articles
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Epling, C.; Stewart, W.S. 1939. A revision of Hedeoma with a review of allied genera. Report Spec. Nov. Regni Veh. 115: 1-49.
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Irving, R.S. 1979. Hedeoma todsenii (Labiatae), a new and rare species from New Mexico. Madroņo. 26: 184-187.
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Irving, R.S. 1980. The systematics of Hedeoma (Labiatae). Sida. 8: 218-295.
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USFWS. 1980. Proposed Rule to Determine Hedeoma todsenii (Todsens Penneyroyal) to be an Endangered Species and to Determine its Critical Habitat. Federal Register. 45, 145: 49858-49860.
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USFWS. 1981. Determination of Two New Mexico Plants to be Endangered Species and Threatened Species, with Critical Habitat. Federal Register. 46, 12: 5730-5733.
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USFWS. 1983. Regional Briefs-Region 2. Endangered Species Technical Bulletin. 8, 12: 2, 5.
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Reports
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Huenneke, L.F. 1993. Interaction of Breeding System and Genetic Structure in Hedeoma todsenii (Lamiaceae), a Rare Mint of New Mexico. Las Cruces, NM: Final Report to Center for Plant Conservation and New Mexico Division of Forestry. p.10. Final Report.
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Irving, R.S. 1980. Status report from Hedeoma todsenii. U.S. Fish and Wildlife Service.
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Sivinski, R.; Lightfoot, K. 1994. Todsen's pennyroyal performance report (E9). Albuquerque, New Mexico: U.S. Fish & Wildlife Service.
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USFWS. 2000. Todsen's pennyroyal (Hedeoma todsenii R.S. Irving) revised recovery plan. Albuquerque: U.S. Fish & Wildlife Service, New Mexico Ecological Services Field Office.
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This
profile was updated on 3/4/2010 |
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